css中clip属性的应用方法（附代码）

clip: rect(<top>, <right>, <bottom>, <left>);</left></bottom></right></top>

nbsp;html>


    <meta>
    <title></title>
    <style>
        .box {
            margin: 100px;
            display: inline-block;
            padding: 8px;
            position: relative;
            background-color: rgba(255,255,255,0.8);
        }
        .box::before {
            content: &#39;&#39;;
            position: absolute;
            left: 0;
            top: 0;
            right: 0;
            bottom: 0;
            border: 2px solid #E611F1;
            animation: borderAround 5s infinite linear;
            background-color: rgba(25,66,25,0.8);
        }
        @keyframes borderAround {
            0%,
            100% {
                clip: rect(0 148px 2px 0);
            }
            25% {
                clip: rect(0 148px 116px 146px);
            }
            50% {
                clip: rect(116px 148px 116px 0);
            }
            75% {
                clip: rect(0 2px 116px 0);
            }
        }
    </style>
    <div>
        <img  alt="css中clip属性的应用方法（附代码）" >
    </div>